Used - Very Good: GIGABYTE GA-EX58-UD3R LGA 1366 ATX Intel Motherboard - Newegg.com
GA-Z68X-UD3R-B3 (rev. 1.0) Overview | Motherboard - GIGABYTE Global
original desktop motherboard for Gigabyte GA X58A UD3R for intel LGA 1366 DDR3 24GB USB3.0 X58A UD3R X58 used mainboard PC|Laptop Motherboard| - AliExpress
GA-EP45-UD3R (rev. 1.0) Gallery | Motherboard - GIGABYTE Global