The Cooler Master Quick Fire Si is a compact, tenkeyless (TKL) keyboard featuring a minimalist design. Side-printed keycaps bring the lettering to the front side of the keycaps as opposed to on top, giving the keyboard a great contrast to the full white LED backlighting across the board. With 5 different lighting modes and 5 illumination levels, the Quick Fire Si is sure to look great in your setup.

Model number SGK- 4050- GKCL1-language 
SGK- 4050- GKCM1- language
SGK- 4050- GKCR1- language
Key Switch Type CHERRY MX Blue, Brown, Red
Availability may vary by region
Backlight White LED on all models 
All keys 
5 brightness levels 
5 lighting modes
Interface USB 2.0
Key Rollover N-Key
Polling Rate 1000 Hz / 1ms
Keycaps ABS, Grip Coated
Media Keys F-Key Media Control 
Repeat Rate Control
Windows Key Lock Yes
Connector Cable Removable Micro-USB 2.0 
Braided with Right-Angle Bend 
1.8 m / 70.9 inch
Dimensions L x W x H 35.9(L) *13.8(W) *3.9(H) cm 
14.1(L) *5.4(W) *1.5(H) inch
Weight 980 g / 2.16 lbs
Warranty 2 years