SMA Plug To N-Type Plug Adaptor. One end fitted with SMA plug, other end has N-Type plug.
eBay
WiFi Wireless Network Card USB 2.0 150M 802.11 b/g/n LAN Adapter with rotatable Antenna for Laptop PC Mini Wi-fi Dongle
Aliexpress UK
A single high quality, gold & zinc plated, 50 Ohm, straight through SMA female to N-type male adapter.
eBay
150Mbps MT7601 Wireless Network Card Mini USB WiFi Adapter LAN Wireless Wifi Receiver Dongle Antenna 802.11 b/g/n for PC Windows
Aliexpress UK
A high quality, zinc & gold plated, 50 Ohm, straight through N-Type female to N-Type female adapter.
eBay
New Realtek USB Wireless 802.11B/G/N Lan Card Wifi Network Adapter RTL8188
Aliexpress UK
Centre pin & socket: Gold plated bras. Ideal for connecting an external antenna to many handheld radios.
eBay
150Mbps WiFi USB Adapter 2.4G Wi-Fi Dongle 5dBi Gain Antenna 802.11b/g/n USB2.0 High-Speed Wireless Card Receiver For PC/Laptop
Aliexpress UK
SMA Plug, male Pin. Type RF Coaxial Adapters. N Jack, female Pin. Style straight. Impedance 50 Ohm.
eBay
150Mbps Mini USB WiFi Adapter MT7601 RTL8188 Wireless Network Card wifi Receiver Dongle 802.11 b/g/n for PC Laptop Windows 2.4G
Aliexpress UK
An RF Adapter 50 ohm N Male to SMA Female by Minicircuits. Made of stainless steel with a frequency range of DC - 18 GHz.
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2.4GHz USB 2.0 Adapter 150Mbps WiFi Wireless Network Card with Antenna Chipset Ralink MTK 7601 802.11 b /g/n for Laptop PC
Aliexpress UK
A single high quality, gold & zinc plated, 50 Ohm, straight through SMA female to N-type female adapter.
eBay
BGGQGG 150Mbps Mini USB WiFi Adapter Wireless Network Card 150M LAN Wi-Fi Receiver Dongle Antenna 2.4G 802.11b/g/n Ethernet
Aliexpress UK
RF coaxial coax N to SMA connector N female to SMA male Plug adapter. Other To (Adapter End) :SMA(Plug) male pin. Family: Coaxial, RF Adapters. Other From (Adapter End): N(Jack) female pin. Style: straight.
eBay
Creacube 2.4G Mini USB Wifi Adapter 150Mbps WiFi Dongle Wi-fi Receiver Wireless Network Card 802.11b/n/g Wifi Ethernet For PC
Aliexpress UK