If USB port cannot be read then replacing the I/O board may be the solution, this part may also be used to repair issues with headphone & Mic jack for ThinkCentre M series Tiny Desktop Micro Tower PC: M73 M91 M92 M82 M72E ALL this and more.

NOTE: Ensure to connect IO marked side of the I/O-board cable to the I/O daughter board and the side marked MB to the system board.

FRU: 54Y9910, 45J9573
Condition: Open box, Brand New and unused in perfect condition.
★★★NOTE: NOT FIT for M83 M90 M90p M93P series, Please check your OLD Panel before PURCHASING!!

Reference Compatible with Desktop models:
. ThinkCentre A63 (5526, 5043)
. ThinkCentre A70 Desktop (7099, 7844)
. ThinkCentre A85 Desktop (7539)
. ThinkCentre M70e (0847, 0835, 0821, 4089)
. ThinkCentre M72E Desktop (3668, 3662, 3655, 0967)
. ThinkCentre M73 (10B6, 10AY, 10B0, 10B3)
. ThinkCentre M75e (5066, 5063, 5056)
. ThinkCentre M76 (3121, 3122, 3127)
. ThinkCentre M78 Desktop (10BU)
. ThinkCentre M79 Desktop (10CN, 10CV)
. ThinkCentre M81 (0385)
. ThinkCentre M82 (3393, 2697, 2698)
. ThinkCentre M91 (4517)
. ThinkCentre M91p USFF (0266)
. ThinkCentre M92 Tower (3208)
. ThinkCentre M92 Small Form Factor
. ThinkCentre M92p Small Form Factor (2941, 2992, 3187, 3204)
. Thinkcentre M90z (0852, 0870)

What's in the box:
. 1x Front I/O Panel USB & Audio Board with cable assembly