Western Digital 2060-701640-007 with BIOS SATA "L"model PCB

Q1:  I am looking for one WD 2060-701640-407 PCB to buy. PCB in plate has 2060-701640-007 REV A but in printed label it says 2060-701640-007, last that you have in your inventory.  Is there any difference between both PCBs?

Q2:   I’m looking to replace a Western Digital PCB #2061-701640-407. The model hard drive is WD10EADS-11M2B2. Which product would you recommend?

Q3:  CHEARCH pcb for
2060-701640-007 REV A
FOR WD 2061-701640-407 AB
MODEL SATA WD10EADS-D0M2B0
DCM: DBNNHT2MHB
DCX: 8003MHT20
LBA: 1953525168
DATE: 07 OCT 2010

This Western Digital 2060-701640-007 with BIOS SATA “L”model PCB is listed in Western Digital SATA PCB on HDDZone.com