The PCI-E Mini Card passive adapter is designed for wireless application on desktop PCs that convert Mini-Card to USB port or standard PCI-Express 1x slot.
You can insert your USB 3.0 type minicard to this adapter then plug to USB 3.0 port through USB cable.
Or insert your PCI-E type mini-card into this adapter then insert to PCI-E 1x connector.

PM4F-U3A Feature

• PCI Express Mini Card to PCI express 1x converter.
• Allows user to test PCI Express Mini modules on the PCI Express slot.
• Supports two primary system bus interface: PCI Express and USB3.0.
• Supports all of Mini-Cards such as 3G,CDMA, WLAN,WWLAN,LTE, Mini Card to desktop PC.
• Support Dual SIM Card.
• Supports U.FL/IPX to RP- SMA pigtail Wireless RF cable adapter.
• Supports U.FL/IPX to SMA pigtail Wireless RF cable adapter.

PM4F-U3A Specification

• PCI Express Mini Card to PCI Express / USB 3.0 adapter.
• PCI Express Mini Card Electromechanical Specification Revision 1.0
• PCI Express Card Electromechanical Specification 1.1
• Universal Serial Bus Specification Revision 3.0.
• Standard Height PCI Express Add-in Card
• Low Profile PCI Express Add-in Card.
• Full / Half -Mini Card dimension.

Notice

• There are existing mPCIe 'form factor' SSD's that present SATA and PATA interface, but none that use the standard mPCIe pinout (i.e. mPCIe tx/rx pins). ...
• PM4F-U3A support standard mPCIe minicard.
  Can’t support custom SATA/PATA SSD minicard.