1. MSATA and Mini PCI-E slots have the same appearance. Before taking a photo, please confirm whether your motherboard has a MINI PCI-E slot (usually for a wireless network card). This product is only suitable for Mini PCIE interface applications, other interfaces are not available! (The above is only for MINI PCI-E to USB products) 2. M2 to USB only supports the M2 slot with Bluetooth interface, usually the KEY-A interface. The CNIV interface of KEY-E cannot be used, and KEY-M and KEY-B cannot be used. (The above is only for M.2 to USB series products) 3. This product is a desktop PCI-E expansion card, which requires a free M2 WIFI KEY A/E slot on the motherboard before it can be installed and used. 4. Suitable for motherboards or notebooks with M2 WIFI KEY A/E interface 5. There are several kinds of MINIPCIE fixing screws that come with computers. The size of the screws that come with each model is different. Since the seller doesn't know what size screws your computer uses, only the most commonly used size screws are used. Description: Product model: M.2(KEY A-E) to dual port USB2.0 Product interface: 5PIN1.0mm, equipped with 2 USB cables, 25cm long Product interface: M.2(A KEY)2230 Product rate: 480Mbps Product master: GL850 Supported system: WinXP/2003/VISTA/2008/7/8/10/1132/64BIT/Linux Precautions: The M.2 standard network card of the notebook contains USB2.0 signal and 3.3V power supply. This product leads the USB signal to the USB HUB chip and boosts the 3.3V to 5V/1A voltage to supply the USB device. Take a look at the working principle above. Since the USB signal is output from the computer, some computer screens may corrupt this signal or have no signal output at all, which will cause the card to be unusable. This is not a card problem. This card cannot be used if the internal USB bridge