Short info: Supermicro RSC R2UW-4E8 - Riser Card Group Connector expansion manufacturer Super Micro Manufacturer Art. No. RSC-R2UW-4E8 EAN/UPC Product description: Supermicro RSC R2UW-4E8 - Riser Card Packaged Quantity 1 Device Type Riser Card Telecommunications None(r) Optical Storage None(r) Audio Output None(r) Network None(r) Detailed Details General Packaged Quantity 1 Device Type Riser Card Telecommunications Type None(r) Memory Mass Storage Controller None(r) Optical Storage Type None(r) Audio Audio Output None(r) Network Type None(r) Expansion / Connectivity Expansion Slots Total (Free) 4 (Total)/ 4 (Free) x PCI Express 2.0 x8 Compatible slots PCI Express 2.0 x8.