What is the name of this single slot PCB-mounted connector?

2 socket for your expansion slot Just pointing out it could cause issues in the slot or device from PCB flex so be a little cautious!

KLS1-503 Pitch Edge Card Connector Slot, Ask PCB Terminal Block Rising clamp · PCB Terminal Block wire protector · Pluggable

pcb slot connector PCB Adapter, Receiver, SIM, VTAC, 16 Pos, 5 Slot, to USB 5 Gbps 510170105 510170105 PCB Adapter, Receiver, SIM

mega don slot PCB Universal Screw Terminal Blocks Pluggable Terminal Blocks PCB Card Edge Connector Card Holder Connector SLOT Connector OSP Connector Power