Supermicro X11SCL-F User Manual page 13

Connector Description
SLOT4, SLOT5 CPU PCI-E 3.0 x4 (in x8) Slots
SLOT6 CPU PCI-E 3.0 x8 (in x16) Slot
SP1 Onboard Buzzer
USB0/1 Back Panel Universal Serial Bus (USB) 2.0 Ports
USB2/3, USB4/5 Front Accessible USB 2.0 Headers
USB6/7 Back Panel USB 3.1 Gen 1 Ports
USB8/9 Front Accessible USB 3.1 Gen 1 Header
USB10 USB 3.1 Gen 1 Type-A Header
VGA VGA Port
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Chapter 1: Introduction