PE 1950 G3 Motherboard revisions

Hi

I need to confirm a part number for a 1950 G3 board. So this part number is listed. G262C

Supposedly it is a G3 board. Only one thing caught my eye on this. Internal usb headers. Iv never seen a 1950 revision with this. Was this the last revision of the 1950 board? Can anyone provide the last version made? 

I found  TT740, J555H, H723K, J243G and M788G. No G262C reference anywhere though. 

Thanks

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