Well, it's somewhat better now, but still not quite right: # sensors eeprom-i2c-0-53 eeprom-i2c-0-53 Adapter: SMBus I801 adapter at 0540 Memory type: DDR2 SDRAM DIMM Memory size (MB): invalid (14 11 96 4) The memory sticks are 1GB each. Here's the output of i2cdump you initially requested: # ./prog/dump/i2cdump 0 0x53 No size specified (using byte-data access) WARNING! This program can confuse your I2C bus, cause data loss and worse! I will probe file /dev/i2c-0, address 0x53, mode byte Continue? [Y/n] y 0 1 2 3 4 5 6 7 8 9 a b c d e f 0123456789abcdef 00: 80 08 08 0e 0b 60 48 00 05 50 60 02 82 04 04 00 ?????`H.?P`????. 10: 0c 04 18 00 01 05 01 50 60 00 00 3c 1e 3c 28 01 ???.???P`..<?<(? 20: 35 47 15 27 3c 28 1e 00 00 37 69 80 23 2d 0f 00 5G?'<(?..7i?#-?. 30: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 11 fa ..............?? 40: 2c ff ff ff ff ff ff ff 01 31 38 48 54 46 31 32 ,.......?18HTF12 50: 38 37 32 59 2d 34 30 45 41 32 20 02 00 04 11 c1 872Y-40EA2 ?.??? 60: 18 83 2b 00 00 00 00 00 00 00 00 00 00 00 00 00 ??+............. 70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................ 90: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................ a0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................ b0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................ c0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................ d0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................ e0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................ f0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff 0f ...............? I really am impressed with the fast response. Thank you. David