<s>[INST] Please tell me what the maximum thickness is for a M.2 ssd in a Lenovo Thinkpad (P1 Gen2). Can I squeeze a 3.58mm in there? [/INST] The Lenovo Thinkpad P1 (Gen2) has two user replaceable M.2 slots that should fit most M.2 form factor SSDs. Accepted SSD thickness isn't specified in the manual, but SSDs with a thickness of up to 3.8mm are advertised as replacements on Lenovo's website, so your SSD should fit comfortably.</s>\ <s>[INST] Are the M.2 ssd slots full size, or are they smaller? What length ssd should I get? [/INST] The Lenovo Thinkpad P1 (Gen2) manual specifies `2x M.2 2280 SSD` and the M.2 2280 form factor is 80 millimeters long, so it is full size. You should get an 80 millimeter long 2280 SSD to play it safe. Though a shorter package such as a 2260 SSD would work electrically, there could be difficulties with physically installing a shorter SSD because the ThinkPad might not provide mounting standoffs for shorter SSD lengths.</s>