# StarTech PEX300WN2X2 — PCIe Wireless Adapter for Desktop PCs

> StarTech 2t2r 2.2 DBI summary. The StarTech PEX300WN2X2 is an entry-level PCIe wireless card that adds 802.11n Wi-Fi (300 Mbps) to desktop PCs. With 2T2R antennas and low-profile bracket support, it's a budget-friendly u

Tags: network_card, startech, pex300wn2x2, pcie-wireless, 802-11n, 300mbps
Source: https://www.amazon.co.jp/dp/B0090X4FFY
Article page: https://web-autoai.com/articles/startech-2t2r-22-dbi-pciepex300wn2x2pcie-80211-b?lang=en

Prices and ratings change over time — check the article page for the current values.

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This article covers StarTech 2t2r 2.2 DBI.

## Overview
The StarTech PEX300WN2X2 is a PCI Express wireless network card designed to add Wi-Fi connectivity to desktop PCs lacking built-in wireless. It supports the 802.11 b/g/n standards with a maximum link rate of 300 Mbps, using a 2T2R antenna configuration with two external 2.2 dBi antennas. This card is a practical solution for upgrading older systems or those with only wired Ethernet.
Positioned as an entry-level product, the PEX300WN2X2 is best suited for budget-conscious users who need basic wireless access for web browsing, email, and light file sharing. It operates exclusively on the 2.4 GHz band and does not support 5 GHz or the newer Wi-Fi 5/6 standards, so performance expectations should be realistic.

## Connectivity & Compatibility
The card uses a PCI Express x1 interface, compatible with any desktop motherboard that has an available PCIe slot (x1, x4, x8, or x16). It includes both standard and low-profile brackets, making it suitable for small-form-factor cases. Supported operating systems include Windows 7, 8, 10, 11, and Linux. Drivers are automatically installed via Windows Update or can be downloaded from StarTech's support site.
Wireless connectivity is limited to 2.4 GHz only, with support for 802.11 b/g/n. Security protocols include WEP, WPA, and WPA2. The two external antennas provide a modest gain of 2.2 dBi each, which is adequate for typical home environments but may struggle in larger spaces or through multiple walls.

## Product Info
The StarTech PEX300WN2X2 was originally released around 2013 and remains available through import channels. The card comes with a 2-year manufacturer warranty. Included in the box are the PCIe card, two antennas, low-profile bracket, and a quick-install guide.
As an entry-level product, it fills a niche for users who need a simple, low-cost wireless upgrade without investing in modern Wi-Fi 6 hardware. However, its age and limited standard mean it is not a future-proof solution.

## Best Use Cases
* Budget desktop upgrade: Ideal for users who want to add Wi-Fi to a PC that only has wired Ethernet. The PCIe form factor offers better stability than USB adapters, especially in terms of sustained throughput and driver reliability. Not recommended for users who need 5 GHz or high-speed internet plans above 300 Mbps.
* Reviving older systems: Perfect for Windows 7/8 era desktops that lack built-in wireless. The card's driver support for legacy OSes ensures compatibility. However, if the motherboard has an M.2 Key E slot, a more modern Wi-Fi 6 module would be a better choice.
* Light internet usage: For tasks like email, web browsing, and streaming video at 1080p, the 300 Mbps ceiling is sufficient. Gamers or users who transfer large files frequently should consider a wired connection or a Wi-Fi 5/6 card instead.

### Product Disclosure (Amazon)
- Manufacturer: STARTECH.COM
- Brand: StarTech.com(スターテック)
- Seller: Taka-tech
- Fulfilled by: Taka-tech
- ASIN: B0090X4FFY
- Note: This article covers a manufacturer-made product based on Amazon listing details.