This Tt eSPORTS Poseidon Z USB Mechanical Gaming Keyboard is a fully-backlit computer keyboard with Blue LEDs and supports Anti-Ghosting for up to 6-8 keys. With this Blue LED Gaming Keyboard you'll have pronounced tactile and audible feedback, giving your gaming and other functions a satisfyingly and accurate response. eSPORTS Poseidon Keyboard Blue. Thermaltake Tt eSPORTS Poseidon Z Blue Switch Illuminated Keyboard KB-PIZ-KLBLUS-01. Tt certified blue switches. Fully back-lit keyboard. 5 year warranty. Anti-Ghosting function. Accessible media keys. Disable windows key function. Tt eSPORTS Poseidon Z Blue Switch Illuminated Keyboard (KB-PIZ-KLBLUS-01). This is a great black, wired, easy to type keyboard for gamers & all computer users alike.