ELECOM TK-TCM012SV Wired Membrane Keypad, Medium Size, with USB Port, 10 Million Clicks, Silver

This numeric keypad features a two-port USB 2.0 hub and can connect up to two USB devices, such as a mouse. It features a [Tab] key, which is convenient for working in Excel, and a [00] key, which is convenient for entering numbers. Large keys improve input efficiency. The NumLock issue is resolved in hardware, eliminating the need for software installation. An LED indicator indicates the NumLock on/off status at a glance. The USB connection allows plugging and unplugging even when the computer is turned on. No dedicated driver installation is required; simply plug it into your computer's USB port and you're ready to go. Durable keys can withstand 10 million keystrokes.