Debug Port; Esm Canister - Lenovo ThinkSystem D4390 Hardware Installation And Maintenance Manual

3.1.4 Debug Port

There is a console port on each canister for software debug with 3.3V TTL serial port in 3.5mm Audio Jack
connector. This port is for Lenovo authorized service use only.

3.1.5 ESM Canister

3.1.5.1 ESM Canister Installation
1) Press the latch and rotate the ESM canister handle to a 45° angle, then hold the handle to push the ESM
canister into the chassis as shown below.
Rotate the ESM canister handle to close ②.
2)
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