Once upon a time in the digital world, there lived a humble RS1081B USB Ethernet adapter. It was a small but mighty device, tasked with the noble goal of bringing a stable, wired internet connection to laptops that had lost their way (or their ports).
Community Links: User-contributed download links for the QTS1081B/RS1081B driver are often found in technical forums or YouTube descriptions, such as this Google Drive link provided in a tech guide. Installation Guide rs1081b usb ethernet driver download
Try a different USB port (preferably a USB 2.0 port if you are on an older PC). Speeds are stuck at 10 Mbps: Check your Ethernet cable (ensure it is at least Cat5e). Once upon a time in the digital world,
catalog.update.microsoft.com..cab file and extract it manually.