This model doesn’t have 10GbE, but you can easily add it. Seems to have a lot of expansion for a 2U. Some guy made a JDM style video on it 2 years ago.
Condition: Used, Tested Working. Does not include rails
Processor: 2x Intel Xeon 6 Core E5-2620 2.0Ghz, 15MB Cache, 7.2GT/s
RAID Controller: LSI 9261-8i SATA/SAS 6Gb MegaRaid Card w/ Battery
Storage: No HDD Includes 12x 3.5" HDD Sleds with screws and 2x 2.5" HDD Sleds in the rear of the chassis.
Operating System: No Operating System
Power Supply: 2x Hot Swap 1100W
Form Factor: 2U
There are a couple threads on STH about the Quanta S210: v1 only, BIOS+BMC are slow and flaky, fans idle at 50%. V2 support by replacing the BIOS chip with a larger one. One guy bricked his board with a bad BIOS update. The backplane is 1:1. The board (SSI-EEB) without chassis has been as low as $60 before.
Quanta S210-X22RQ 2U Bare Bones Server w/DAS2RSMBACO LGA2011 Sys Bd/HDD Trays
A pretty good deal for this barebones, looks like it is basically an LGA2011 version of the Dell C2100/Quanta FS12-TY. Not sure what rails will fit, but with built in 10Gb...