Please help me narrow down this perplexing mystery:
1. USB Mic device takes ~45 minutes to recognize after warm start.
2. Same device disconnect sporadically, usually about an hour after it
was last used.
3. Otherwise device works fine for days on end.
Host: Intel NUC dccp847dye
Device: CAD U7 Mic
Kernel:3.5.0-47-generic #71~precise1-Ubuntu SMP Wed Feb 19 22:05:41
UTC 2014 i686 i686 i386 GNU/Linux
USBMon trap of first activity when device is connected:
f69900c0 3707165147 S Ci:2:001:0 s a3 00 0000 0001 0004 4 <
f69900c0 3707165199 C Ci:2:001:0 0 4 = 03050400
f69900c0 3707165204 S Ci:2:001:0 s a3 00 0000 0002 0004 4 <
f69900c0 3707165208 C Ci:2:001:0 0 4 = 00010000
f3dbd600 3707165211 S Ii:2:001:1 -115:2048 4 <
f69900c0 3707165250 S Ci:2:001:0 s a3 00 0000 0001 0004 4 <
f69900c0 3707165254 C Ci:2:001:0 0 4 = 03050400
f69900c0 3707165258 S Co:2:001:0 s 23 01 0012 0001 0000 0
f69900c0 3707165262 C Co:2:001:0 0 0
f6b7b300 3707181165 S Ci:2:001:0 s a3 00 0000 0001 0004 4 <
f6b7b300 3707181184 C Ci:2:001:0 0 4 = 03050000
f6b7b300 3707181190 S Ci:2:002:0 s 80 00 0000 0000 0002 2 <
f6b7b300 3707181332 C Ci:2:002:0 0 2 = 0300
f6b7b300 3707181354 S Co:2:002:0 s 00 01 0001 0000 0000 0
f6b7b300 3707181494 C Co:2:002:0 0 0
f6b7b300 3707181525 S Ci:2:002:0 s a3 00 0000 0001 0004 4 <
f6b7b300 3707181576 C Ci:2:002:0 0 4 = 01010100
f6b7b300 3707181651 S Co:2:002:0 s 23 01 0010 0001 0000 0
f6b7b300 3707181701 C Co:2:002:0 0 0
f6b7b300 3707181779 S Ci:2:002:0 s a3 00 0000 0002 0004 4 <
f6b7b300 3707181826 C Ci:2:002:0 0 4 = 00010000
f6b7b300 3707181880 S Ci:2:002:0 s a3 00 0000 0003 0004 4 <
f6b7b300 3707181955 C Ci:2:002:0 0 4 = 00010000
f6b7b300 3707181984 S Ci:2:002:0 s a3 00 0000 0004 0004 4 <
f6b7b300 3707182124 C Ci:2:002:0 0 4 = 00010000
f6b7b300 3707182189 S Ci:2:002:0 s a3 00 0000 0005 0004 4 <
f6b7b300 3707182328 C Ci:2:002:0 0 4 = 00010000
f6b7b300 3707182354 S Ci:2:002:0 s a3 00 0000 0006 0004 4 <
f6b7b300 3707182451 C Ci:2:002:0 0 4 = 00010000
f6b7b300 3707182463 S Ci:2:002:0 s a3 00 0000 0007 0004 4 <
f6b7b300 3707182576 C Ci:2:002:0 0 4 = 00010000
f6b7b300 3707182638 S Ci:2:002:0 s a3 00 0000 0008 0004 4 <
f6b7b300 3707182745 C Ci:2:002:0 0 4 = 00010000
f6dfaf00 3707285161 S Ii:2:002:1 -115:2048 2 <
f69906c0 3707285208 S Ci:2:002:0 s a3 00 0000 0001 0004 4 <
f69906c0 3707285332 C Ci:2:002:0 0 4 = 01010000
f69906c0 3707285406 S Co:2:002:0 s 23 03 0004 0001 0000 0
f69906c0 3707285462 C Co:2:002:0 0 0
f69906c0 3707301135 S Ci:2:002:0 s a3 00 0000 0001 0004 4 <
f69906c0 3707301224 C Ci:2:002:0 0 4 = 03011000
f6b7b6c0 3707357171 S Co:2:002:0 s 23 01 0014 0001 0000 0
f6b7b6c0 3707357376 C Co:2:002:0 0 0
f6990540 3707357440 S Ci:2:000:0 s 80 06 0100 0000 0040 64 <
f6990540 3707357575 C Ci:2:000:0 0 18 = 12011001 00000040 8c0d0800 00010001 0001
f6990540 3707357598 S Co:2:002:0 s 23 03 0004 0001 0000 0
f6990540 3707357743 C Co:2:002:0 0 0
f6990840 3707373108 S Ci:2:002:0 s a3 00 0000 0001 0004 4 <
f6990840 3707373211 C Ci:2:002:0 0 4 = 03011000
f6dfaf00 3707425421 C Ii:2:002:1 0:2048 2 = 0200
f6dfaf00 3707425442 S Ii:2:002:1 -115:2048 2 <
f6b7b480 3707429152 S Co:2:002:0 s 23 01 0014 0001 0000 0
f6b7b480 3707429371 C Co:2:002:0 0 0
f6b7b480 3707429410 S Co:2:000:0 s 00 05 0003 0000 0000 0
f6b7b480 3707429592 C Co:2:000:0 0 0
f6b7b480 3707449172 S Ci:2:003:0 s 80 06 0100 0000 0012 18 <
f6b7b480 3707449462 C Ci:2:003:0 0 18 = 12011001 00000040 8c0d0800 00010001 0001
f6b7b480 3707449674 S Ci:2:003:0 s 80 06 0200 0000 0009 9 <
f6b7b480 3707449846 C Ci:2:003:0 0 9 = 0902e000 040100a0 32
f6b7b480 3707449913 S Ci:2:003:0 s 80 06 0200 0000 00e0 224 <
f6b7b480 3707450214 C Ci:2:003:0 0 224 = 0902e000 040100a0 32090400
00000101 00000a24 01000147 00020102 0c240201
f6b7b480 3707450294 S Ci:2:003:0 s 80 06 0300 0000 00ff 255 <
f6b7b480 3707450494 C Ci:2:003:0 0 4 = 04030904
f6b7b480 3707450523 S Ci:2:003:0 s 80 06 0301 0409 00ff 255 <
f6b7b480 3707450707 C Ci:2:003:0 0 56 = 38034300 2d004d00 65006400
69006100 20005500 53004200 20004100 75006400
f6b7bc00 3707451430 S Co:2:003:0 s 00 09 0001 0000 0000 0
f6b7bc00 3707451577 C Co:2:003:0 0 0
f6b7b840 3707452108 S Ci:2:002:0 s a3 00 0000 0001 0004 4 <
f6b7b840 3707452200 C Ci:2:002:0 0 4 = 03010000
f69906c0 3707478962 S Ci:2:003:0 s 80 06 0301 0409 00ff 255 <
f69906c0 3707479200 C Ci:2:003:0 0 56 = 38034300 2d004d00 65006400
69006100 20005500 53004200 20004100 75006400
f69906c0 3707479372 S Co:2:003:0 s 01 0b 0001 0001 0000 0
f69906c0 3707479575 C Co:2:003:0 0 0
f69906c0 3707479699 S Co:2:003:0 s 22 01 0100 0001 0003 3 = 80bb00
f69906c0 3707479950 C Co:2:003:0 0 3 >
f69906c0 3707480033 S Ci:2:003:0 s a2 81 0100 0001 0003 3 <
f69906c0 3707480203 C Ci:2:003:0 0 3 = 80bb00
f69906c0 3707480692 S Co:2:003:0 s 01 0b 0000 0001 0000 0
f69906c0 3707480825 C Co:2:003:0 0 0
f69906c0 3707480980 S Co:2:003:0 s 01 0b 0001 0002 0000 0
f69906c0 3707481200 C Co:2:003:0 0 0
f69906c0 3707481332 S Co:2:003:0 s 22 01 0100 0082 0003 3 = 80bb00
f69906c0 3707481574 C Co:2:003:0 0 3 >
f69906c0 3707481889 S Ci:2:003:0 s a2 81 0100 0082 0003 3 <
f69906c0 3707482076 C Ci:2:003:0 0 3 = 80bb00
f69906c0 3707482130 S Co:2:003:0 s 01 0b 0000 0002 0000 0
f69906c0 3707482324 C Co:2:003:0 0 0
f2cfee40 3707482435 S Ci:2:003:0 s a1 83 0201 0900 0002 2 <
f2cfee40 3707482576 C Ci:2:003:0 0 2 = f0ff
f2cfee40 3707482591 S Ci:2:003:0 s a1 82 0201 0900 0002 2 <
f2cfee40 3707482700 C Ci:2:003:0 0 2 = a0e3
f2cfee40 3707482709 S Ci:2:003:0 s a1 84 0201 0900 0002 2 <
f2cfee40 3707482825 C Ci:2:003:0 0 2 = 3000
f6a13c00 3707483791 S Co:2:003:0 s 21 04 0201 0900 0002 2 = 1800
f6a13c00 3707483951 C Co:2:003:0 -32 0
f6a13c00 3707484279 S Co:2:003:0 s 21 04 0201 0900 0002 2 = 1800
f6a13c00 3707484452 C Co:2:003:0 -32 0
f6a13c00 3707484465 S Co:2:003:0 s 21 04 0201 0900 0002 2 = 1800
f6a13c00 3707484701 C Co:2:003:0 -32 0
f6a13c00 3707484713 S Co:2:003:0 s 21 04 0201 0900 0002 2 = 1800
f6a13c00 3707484951 C Co:2:003:0 -32 0
f6a13c00 3707484964 S Co:2:003:0 s 21 04 0201 0900 0002 2 = 1800
f6a13c00 3707485201 C Co:2:003:0 -32 0
f6a13c00 3707485386 S Co:2:003:0 s 21 04 0201 0900 0002 2 = 1800
f6a13c00 3707485575 C Co:2:003:0 -32 0
f6a13c00 3707485668 S Co:2:003:0 s 21 04 0201 0900 0002 2 = 1800
f6a13c00 3707485822 C Co:2:003:0 -32 0
f6a13c00 3707485949 S Co:2:003:0 s 21 04 0201 0900 0002 2 = 1800
f6a13c00 3707486073 C Co:2:003:0 -32 0
f6990e40 3707486128 S Co:2:003:0 s 21 04 0201 0900 0002 2 = 1800
f6990e40 3707486324 C Co:2:003:0 -32 0
f6a13b40 3707486343 S Co:2:003:0 s 21 04 0201 0900 0002 2 = 1800
f6a13b40 3707486576 C Co:2:003:0 -32 0
f6a13b40 3707486604 S Ci:2:003:0 s a1 84 0201 0900 0002 2 <
f6a13b40 3707486825 C Ci:2:003:0 0 2 = 3000
f6a13b40 3707486840 S Ci:2:003:0 s a1 81 0201 0900 0002 2 <
f6a13b40 3707486949 C Ci:2:003:0 0 2 = c0ff
f6a13b40 3707487002 S Co:2:003:0 s 21 01 0201 0900 0002 2 = f0ff
f6a13b40 3707487201 C Co:2:003:0 0 2 >
f6a13b40 3707487214 S Ci:2:003:0 s a1 81 0201 0900 0002 2 <
f6a13b40 3707487451 C Ci:2:003:0 0 2 = c0ff
f6a13b40 3707487464 S Co:2:003:0 s 21 01 0201 0900 0002 2 = c0ff
f6a13b40 3707487574 C Co:2:003:0 0 2 >
f6a13180 3707487627 S Ci:2:003:0 s a1 83 0200 0a00 0002 2 <
f6a13180 3707487827 C Ci:2:003:0 0 2 = d017
f6a13180 3707487842 S Ci:2:003:0 s a1 82 0200 0a00 0002 2 <
f6a13180 3707487949 C Ci:2:003:0 0 2 = 0000
f6a13180 3707487993 S Ci:2:003:0 s a1 84 0200 0a00 0002 2 <
f6a13180 3707488201 C Ci:2:003:0 0 2 = 3000
f6a13180 3707488390 S Co:2:003:0 s 21 04 0200 0a00 0002 2 = 1800
f6a13180 3707488576 C Co:2:003:0 -32 0
f6a13180 3707488687 S Co:2:003:0 s 21 04 0200 0a00 0002 2 = 1800
f6a13180 3707488827 C Co:2:003:0 -32 0
f6a13180 3707488840 S Co:2:003:0 s 21 04 0200 0a00 0002 2 = 1800
f6a13180 3707489076 C Co:2:003:0 -32 0
f6a13180 3707489089 S Co:2:003:0 s 21 04 0200 0a00 0002 2 = 1800
f6a13180 3707489325 C Co:2:003:0 -32 0
f6a13180 3707489473 S Co:2:003:0 s 21 04 0200 0a00 0002 2 = 1800
f6a13180 3707489574 C Co:2:003:0 -32 0
f6a13180 3707489631 S Co:2:003:0 s 21 04 0200 0a00 0002 2 = 1800
f6a13180 3707489826 C Co:2:003:0 -32 0
f6a13180 3707489876 S Co:2:003:0 s 21 04 0200 0a00 0002 2 = 1800
f6a13180 3707490076 C Co:2:003:0 -32 0
f6a13180 3707490168 S Co:2:003:0 s 21 04 0200 0a00 0002 2 = 1800
f6a13180 3707490327 C Co:2:003:0 -32 0
f6a13180 3707490402 S Co:2:003:0 s 21 04 0200 0a00 0002 2 = 1800
f6a13180 3707490576 C Co:2:003:0 -32 0
f6a13180 3707490684 S Co:2:003:0 s 21 04 0200 0a00 0002 2 = 1800
f6a13180 3707490823 C Co:2:003:0 -32 0
f6a13180 3707490873 S Ci:2:003:0 s a1 84 0200 0a00 0002 2 <
f6a13180 3707491075 C Ci:2:003:0 0 2 = 3000
f6a13180 3707491204 S Ci:2:003:0 s a1 81 0200 0a00 0002 2 <
f6a13180 3707491452 C Ci:2:003:0 0 2 = 0000
f6a13180 3707491467 S Co:2:003:0 s 21 01 0200 0a00 0002 2 = 3000
f6a13180 3707491574 C Co:2:003:0 0 2 >
f6a13180 3707491601 S Ci:2:003:0 s a1 81 0200 0a00 0002 2 <
f6a13180 3707491707 C Ci:2:003:0 0 2 = 0000
f6a13180 3707491721 S Co:2:003:0 s 21 01 0200 0a00 0002 2 = 6000
f6a13180 3707491826 C Co:2:003:0 0 2 >
f6a13180 3707491836 S Ci:2:003:0 s a1 81 0200 0a00 0002 2 <
f6a13180 3707491951 C Ci:2:003:0 0 2 = 0000
f6a13180 3707491965 S Co:2:003:0 s 21 01 0200 0a00 0002 2 = c000
f6a13180 3707492075 C Co:2:003:0 0 2 >
f6a13180 3707492085 S Ci:2:003:0 s a1 81 0200 0a00 0002 2 <
f6a13180 3707492201 C Ci:2:003:0 0 2 = 0000
f6a13180 3707492214 S Co:2:003:0 s 21 01 0200 0a00 0002 2 = 8001
f6a13180 3707492452 C Co:2:003:0 0 2 >
f6a13180 3707492465 S Ci:2:003:0 s a1 81 0200 0a00 0002 2 <
f6a13180 3707492573 C Ci:2:003:0 0 2 = 8001
f6a13180 3707492601 S Co:2:003:0 s 21 01 0200 0a00 0002 2 = 0000
f6a13180 3707492704 C Co:2:003:0 0 2 >
f6a13c00 3707493836 S Co:2:003:0 s 21 0a 0000 0003 0000 0
f6a13c00 3707493952 C Co:2:003:0 0 0
f36f8a80 3707495756 S Ci:2:003:0 s 81 06 2200 0003 0032 50 <
f36f8a80 3707495954 C Ci:2:003:0 0 50 = 050c0901 a1011500 250109e9
09ea7501 95028102 09e20900 81060900 95048102
f30cb780 3707509102 S Ci:2:003:0 s a1 01 0100 0003 0004 64 <
f30cb780 3707509204 C Ci:2:003:0 0 4 = 00000000
f30cb240 3707509492 S Ii:2:003:3 -115:32 4 <
f30cb240 3707522579 C Ii:2:003:3 0:32 4 = 00000000
f30cb240 3707522623 S Ii:2:003:3 -115:32 4 <
f6a13c00 3707525614 S Ci:2:003:0 s a1 81 0100 0900 0001 1 <
f6a13c00 3707525828 C Ci:2:003:0 0 1 = 00
f6a13c00 3707525879 S Co:2:003:0 s 21 01 0201 0900 0002 2 = e0eb
f6a13c00 3707525948 C Co:2:003:0 0 2 >
f6a13c00 3707525960 S Ci:2:003:0 s a1 81 0202 0900 0002 2 <
f6a13c00 3707526073 C Ci:2:003:0 0 2 = c0ff
f6df9540 3707531713 S Co:2:003:0 s 21 01 0202 0900 0002 2 = e0eb
f6df9540 3707531953 C Co:2:003:0 0 2 >
f6df9540 3707533001 S Ci:2:003:0 s a1 81 0100 0a00 0001 1 <
f6df9540 3707533199 C Ci:2:003:0 0 1 = 00
f6df9540 3707533353 S Ci:2:003:0 s a1 81 0700 0a00 0001 1 <
f6df9540 3707533576 C Ci:2:003:0 0 1 = 01
f36c06c0 3707558663 S Co:2:003:0 s 01 0b 0001 0001 0000 0
f36c06c0 3707558837 C Co:2:003:0 0 0
f36c06c0 3707559028 S Co:2:003:0 s 22 01 0100 0001 0003 3 = 44ac00
f36c06c0 3707559201 C Co:2:003:0 0 3 >
f36c06c0 3707559212 S Ci:2:003:0 s a2 81 0100 0001 0003 3 <
f36c06c0 3707559461 C Ci:2:003:0 0 3 = 44ac00
f3237300 3707559522 S Zo:2:003:1 -115:1:0 5 -18:0:176 -18:176:176
-18:352:176 -18:528:176 -18:704:176 880 = 00000000 00000000 00000000
00000000 00000000 00000000 00000000 00000000
f3237f00 3707559713 S Zo:2:003:1 -115:1:0 6 -18:0:176 -18:176:176
-18:352:176 -18:528:176 -18:704:180 1060 = 00000000 00000000 00000000
00000000 00000000 00000000 00000000 00000000
f2357cc0 3707564808 S Co:2:003:0 s 01 0b 0001 0002 0000 0
f2357cc0 3707564985 C Co:2:003:0 0 0
f2357cc0 3707565201 S Co:2:003:0 s 22 01 0100 0082 0003 3 = 44ac00
f2357cc0 3707565452 C Co:2:003:0 0 3 >
f36c0480 3707565517 S Ci:2:003:0 s a2 81 0100 0082 0003 3 <
f36c0480 3707565895 C Ci:2:003:0 0 3 = 44ac00
f3237300 3707573831 C Zo:2:003:1 0:1:401:0 5 0:0:176 0:176:176
0:352:176 0:528:176 0:704:176 880 >
f3237300 3707573842 S Zo:2:003:1 -115:1:401 5 -18:0:176 -18:176:176
-18:352:176 -18:528:176 -18:704:176 880 = 00000000 00000000 00000000
00000000 00000000 00000000 00000000 00000000
f2c33600 3707577107 S Co:2:003:0 s 01 0b 0000 0002 0000 0
f2c33600 3707577201 C Co:2:003:0 0 0
f3237f00 3707579827 C Zo:2:003:1 0:1:406:0 6 0:0:176 0:176:176
0:352:176 0:528:176 0:704:180 1060 >
f3237f00 3707579838 S Zo:2:003:1 -115:1:406 6 -18:0:176 -18:176:176
-18:352:176 -18:528:180 -18:708:176 1060 = 00000000 00000000 00000000
00000000 00000000 00000000 00000000 00000000
f3237300 3707584913 C Zo:2:003:1 -2:1:412:0 5 0:0:176 0:176:176
0:352:176 0:528:176 0:704:176 880 >
f3237f00 3707590880 C Zo:2:003:1 -2:1:417:0 6 0:0:176 0:176:176
0:352:176 0:528:180 0:708:176 1060 >
f306cd80 3707591131 S Co:2:003:0 s 01 0b 0000 0001 0000 0
f306cd80 3707591367 C Co:2:003:0 0 0
f36f8840 3707601500 S Co:2:003:0 s 01 0b 0001 0002 0000 0
f36f8840 3707601575 C Co:2:003:0 0 0
f36f8840 3707601791 S Co:2:003:0 s 22 01 0100 0082 0003 3 = 44ac00
f36f8840 3707601967 C Co:2:003:0 0 3 >
f36f8840 3707602061 S Ci:2:003:0 s a2 81 0100 0082 0003 3 <
f36f8840 3707602275 C Ci:2:003:0 0 3 = 44ac00
f36f8e40 3707602405 S Co:2:003:0 s 01 0b 0000 0002 0000 0
f36f8e40 3707602575 C Co:2:003:0 0 0
f36edc00 3707607919 S Co:2:003:0 s 01 0b 0001 0001 0000 0
f36edc00 3707608087 C Co:2:003:0 0 0
f6990d80 3707608316 S Co:2:003:0 s 22 01 0100 0001 0003 3 = 44ac00
f6990d80 3707608460 C Co:2:003:0 0 3 >
f6990d80 3707608543 S Ci:2:003:0 s a2 81 0100 0001 0003 3 <
f6990d80 3707608818 C Ci:2:003:0 0 3 = 44ac00
f31c8200 3707608901 S Zo:2:003:1 -115:1:0 8 -18:0:176 -18:176:176
-18:352:176 -18:528:176 -18:704:176 1408 = 00000000 00000000 00000000
00000000 00000000 00000000 00000000 00000000
f31c8400 3707609065 S Zo:2:003:1 -115:1:0 8 -18:0:176 -18:176:180
-18:356:176 -18:532:176 -18:708:176 1412 = 00000000 00000000 00000000
00000000 00000000 00000000 00000000 00000000
f31c8600 3707609075 S Zo:2:003:1 -115:1:0 8 -18:0:176 -18:176:176
-18:352:176 -18:528:180 -18:708:176 1412 = 00000000 00000000 00000000
00000000 00000000 00000000 00000000 00000000
f3677180 3707624805 S Co:2:003:0 s 01 0b 0001 0002 0000 0
f3677180 3707625081 C Co:2:003:0 0 0
f3677180 3707625319 S Co:2:003:0 s 22 01 0100 0082 0003 3 = 44ac00
f3677180 3707625451 C Co:2:003:0 0 3 >
f6990d80 3707625477 S Ci:2:003:0 s a2 81 0100 0082 0003 3 <
f6990d80 3707625573 C Ci:2:003:0 0 3 = 44ac00
f31c8200 3707625825 C Zo:2:003:1 0:1:450:0 8 0:0:176 0:176:176
0:352:176 0:528:176 0:704:176 1408 >
f31c8200 3707625840 S Zo:2:003:1 -115:1:450 8 -18:0:176 -18:176:176
-18:352:176 -18:528:176 -18:704:176 1412 = 00000000 00000000 00000000
00000000 00000000 00000000 00000000 00000000
lsusb of relevant bus:
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 9 Hub
bDeviceSubClass 0 Unused
bDeviceProtocol 1 Single TT
bMaxPacketSize0 64
idVendor 0x8087 Intel Corp.
idProduct 0x0024 Integrated Rate Matching Hub
bcdDevice 0.00
iManufacturer 0
iProduct 0
iSerial 0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 25
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xe0
Self Powered
Remote Wakeup
MaxPower 0mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 9 Hub
bInterfaceSubClass 0 Unused
bInterfaceProtocol 0 Full speed (or root) hub
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0001 1x 1 bytes
bInterval 12
Hub Descriptor:
bLength 9
bDescriptorType 41
nNbrPorts 6
wHubCharacteristic 0x0009
Per-port power switching
Per-port overcurrent protection
TT think time 8 FS bits
bPwrOn2PwrGood 50 * 2 milli seconds
bHubContrCurrent 0 milli Ampere
DeviceRemovable 0x00
PortPwrCtrlMask 0xff
Hub Port Status:
Port 1: 0000.0100 power
Port 2: 0000.0100 power
Port 3: 0000.0100 power
Port 4: 0000.0100 power
Port 5: 0000.0100 power
Port 6: 0000.0100 power
Device Qualifier (for other device speed):
bLength 10
bDescriptorType 6
bcdUSB 2.00
bDeviceClass 9 Hub
bDeviceSubClass 0 Unused
bDeviceProtocol 0 Full speed (or root) hub
bMaxPacketSize0 64
bNumConfigurations 1
Device Status: 0x0001
Self Powered
Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 9 Hub
bDeviceSubClass 0 Unused
bDeviceProtocol 1 Single TT
bMaxPacketSize0 64
idVendor 0x8087 Intel Corp.
idProduct 0x0024 Integrated Rate Matching Hub
bcdDevice 0.00
iManufacturer 0
iProduct 0
iSerial 0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 25
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xe0
Self Powered
Remote Wakeup
MaxPower 0mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 9 Hub
bInterfaceSubClass 0 Unused
bInterfaceProtocol 0 Full speed (or root) hub
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0002 1x 2 bytes
bInterval 12
Hub Descriptor:
bLength 11
bDescriptorType 41
nNbrPorts 8
wHubCharacteristic 0x0009
Per-port power switching
Per-port overcurrent protection
TT think time 8 FS bits
bPwrOn2PwrGood 50 * 2 milli seconds
bHubContrCurrent 0 milli Ampere
DeviceRemovable 0x00 0x00
PortPwrCtrlMask 0xff 0xff
Hub Port Status:
Port 1: 0000.0103 power enable connect
Port 2: 0000.0100 power
Port 3: 0000.0100 power
Port 4: 0000.0100 power
Port 5: 0000.0100 power
Port 6: 0000.0100 power
Port 7: 0000.0100 power
Port 8: 0000.0100 power
Device Qualifier (for other device speed):
bLength 10
bDescriptorType 6
bcdUSB 2.00
bDeviceClass 9 Hub
bDeviceSubClass 0 Unused
bDeviceProtocol 0 Full speed (or root) hub
bMaxPacketSize0 64
bNumConfigurations 1
Device Status: 0x0001
Self Powered
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