Supermicro SuperServer SYS-521E-WR User Manual page 19

Connector
SATA8–SATA9
SXB1A, SXB1B, SXB1C
SXB2
SGPIO2
USB0/1
USB2
USB3/4
USB5/6
VGA
Description
SATA 3.0 Ports with SuperDOM Power
PCIe 5.0 x16 + x16 Supermicro Proprietary WIO Left Add-on Card Slots
PCIe 5.0 x8 (In x16) Supermicro Proprietary WIO Right Add-on Card Slot
Serial Link General Purpose I/O Header
Back Panel USB 2.0 Ports
Front Access USB 2.0 TypeA Header
Back Panel USB 3.2 Gen 1 Ports
Front Access USB 3.2 Gen 1 Headers
VGA Port
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Chapter 1: Introduction