Royal Kludge is famed for great affordable entry-level keyboards that offer unparalleled features like hot-swap ability and wireless connectivity. The RK98 is a great option for users looking for a fully-featured keyboard with a Numpad but also values portability and compactness. Tri-mode allows the switching of up to 5 separate devices via the wired connection, 2.4 GHz wireless dongle, and Bluetooth. The unique pass-thru ports allow the direct connection of two other USB devices conveniently. Hot-swappable, compatible with 98% well-known 3-pin/5-pin switches on the market 98-key layout, better and complete functions Three-mode connection, support Bluetooth 5.0/2.4G/wired connection Support Win/Mac mode, with corresponding shortcut keys, compatible with ios/Android and other devices RGB backlit 18 RGB backlight effects Support software custom RGB backlight and custom button function All keys have no conflict 3750 mAh lithium battery Foot support supports adjustment of three heights F1-F12 multimedia function keys Have 2 USB ports and 1 C port Battery reminder function