The Realtek RTL8187L is a wireless LAN (Wi-Fi) chipset commonly used in various devices to provide wireless connectivity. Supporting the 802.11b/g Wi-Fi standards, this chipset offered wireless data transfer rates of up to 54 Mbps. The RTL8187L was commonly integrated into USB dongles, PCI cards, and other adapters to add wireless capabilities to laptops, desktop computers, and other devices.

The chipset was known for its compatibility with a wide range of operating systems and devices due to its standardized drivers and wide adoption. It often featured an external antenna for improved signal reception, making it suitable for scenarios where network coverage was a concern. However, its performance could be affected by interference and distance limitations common to the 2.4 GHz frequency band.