7 ms·Don't forget the USB3 of X230by emantos 3y agoDon't forget the USB3 of X230varnaud 3y agoi7 version of the x220 has one USB3lproven 3y agoTrue, and my X220 has a cheapo USB3 card from AliExpress that gives it a few more USB3 ports. Cost about $5 or something.