Adapter Deals & Adapters for Sale

A straightforward upgrade for anyone who wants to add surround sound processing to a PC or laptop without opening up the case or installing a dedicated sound card — just plug it into a USB port and it handles the rest. Buy Now at Newegg

Useful for desktop PC owners who want to upgrade their wired network speeds beyond standard gigabit, particularly if your router or NAS already supports 2.5Gbps and your motherboard lacks a built-in 2.5G port. The dual-port design means you can connect two devices or use one port for your network and one for a direct device-to-device link. Buy Now at Newegg

A straightforward upgrade for older desktops that lack a built-in network port or have a failing onboard NIC, letting you restore or add a wired ethernet connection without replacing the motherboard. Buy Now at Newegg

Mostly relevant for cryptocurrency miners or anyone building a multi-GPU rig, these risers let you mount video cards away from the motherboard to improve airflow and fit more cards in a single case. Buy Now at Newegg

Useful for adding a second or third monitor to a laptop or desktop without opening the machine to install a dedicated GPU, as long as you're not trying to run games or GPU-heavy applications through it. Buy Now at Newegg

A compact plug-in adapter that adds Bluetooth 5.0 to any desktop or laptop without a built-in wireless chip, useful if you want to connect headphones, speakers, or a controller without buying a new machine. Buy Now at Newegg

Useful if you're running Ubiquiti gear that requires 24V passive PoE but your switch only outputs 802.3af standard PoE, since this adapter handles the conversion without extra hardware. At $28, that's $5 off the $33 list price. Buy Now at Newegg

Useful if your router and NAS or gaming PC support 2.5Gbps speeds but your motherboard only has a standard gigabit port — this card adds dual 2.5Gbps connections over a single PCIe slot without needing a new board. Buy Now at Newegg

Handy for anyone working with a laptop or desktop that lacks enough video outputs, this adapter adds an HDMI display connection through a USB 3.0 port without needing to open up your machine. Buy Now at Newegg

Handy for streamers or content creators who need to capture HDMI video output from a camera, console, or other device and pipe it into recording software on a PC. Buy Now at Newegg