I opened it and only touched it. It hasn't been connected to a PC. Please refrain from purchasing if you are concerned about minor details. If you prefer membrane keyboards, you should be fine. BUFFALO BSTK120BK Numeric Keypad Black 131 BUFFALO BSTK120BK Numeric Keypad Black Release Date: July 1, 2021 ● Uses SIAA certified antibacterial resin to inhibit the growth of bacteria The use of antibacterial resin inhibits the growth of bacteria. Keeps the key surface hygienic. ● Equipped with "Tab key" and "00 key" ideal for Excel Equipped with a "Tab key" that makes it easy to move cells in Excel. Also, it uses a "00" key convenient for high-value input, making it ideal for spreadsheets. ● Equipped with wide rubber feet to prevent the body from slipping The wide rubber feet on the back of the body make it less likely to slip, providing stable typing. ● Uses the same 19mm key pitch as desktop computers The same 19mm key pitch as a standard desktop keyboard. You can use the keyboard's ease of use with the numeric keypad. Also, the top surface of the body is sloped, making it an even easier-to-type numeric keypad. ● Ready to use just by plugging it into your computer Easy connection, just plug this product into your computer's USB port. No driver installation required, no troublesome settings. ● Compliant with RoHS standards Compliant with the RoHS Directive, the Restriction of Hazardous Substances in Electrical and Electronic Equipment, which has been in effect in the EU since July 2006. ● Electromagnetic noise countermeasures for safe use Electromagnetic noise countermeasures (VCCI Class B certified) allow you to use it with confidence without worrying about interference with other devices.