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T25 keyboard will go into T470 with a tiny bit of dremeling. I think it's a bit more work to get it into T480. I have a couple of T420 and T420s at home; I did

T25 keyboard will go into T470 with a tiny bit of dremeling. I think it's a bit more work to get it into T480. I have a couple of T420 and T420s at home; I did use T530 at work back in the day, but don't have one now as I find it lacks in portability compared to T450+ generations (plus a personal perspective that if you're gonna have all that 15+" space, you might as well have full keyboard - but that's very much subjective:). T440/T540 was an abomination upon all that is holy, having witnessed two separate consulting architects slam laptops on the desk in frustration over its trackpad "buttons"! Which is why the T470/570/480/580 seems to be my own sweet spot right now - lightweight enough to be portable, still runs modern stuff well enough, and easily replaceable battery/memory/SSD:).

ssl-3 3y ago
Good informaton. Thanks. Man, I just want 15"-ish laptops with good displays and keyboards that don't leave me off-center. I first used an Inspiron 6000i, and it was a fine machine for a decade or so despite being consumer-ish. I bought it new for a lot of money. I was young, but it never died. It still works. I replaced it with a used Dell Precision M4500, which was a whole different class of machine: It was spectacularly useful, and the one-screw magnesium bottom-plate was amazing. The display was astoundingly good. But the machine died: As near as I can trace, the IC on the mainboard that controls the backlight gave up. A replacement mainboard did not correct the issue, presumably because it also died for the same reason. The Precision M4600, the next newer model, has a numeric keypad, so I hate it. Same with other later Precision laptops. I'm a lot less critical about key-feel than I am about being centered on the screen. I often use my laptops as literal-laptops, and keeping my eyes and body centered seems useful to me in ways that numeric keypads on laptops cannot allow. I lust for a machine newer than my T530 that is also "serious" and that has a 15" display and that lacks a numeric keypad. : I grew up on an 88-key XT keyboard, wherein NumLock was still useful and it allowed me to choose between having arrow keys or having a numeric keypad. I thus learned to use top-row numbers because that allowed me to use both top-row numbers and arrow-keys at the same time, without actuating NumLock. I have not changed. (I do not wish to change. I do wish to keep my hands mostly-centered on the screen, though.)

ssl-3 3y ago

Good informaton. Thanks. Man, I just want 15"-ish laptops with good displays and keyboards that don't leave me off-center. I first used an Inspiron 6000i, and it was a fine machine for a decade or so despite being consumer-ish. I bought it new for a lot of money. I was young, but it never died. It still works. I replaced it with a used Dell Precision M4500, which was a whole different class of machine: It was spectacularly useful, and the one-screw magnesium bottom-plate was amazing. The display was astoundingly good. But the machine died: As near as I can trace, the IC on the mainboard that controls the backlight gave up. A replacement mainboard did not correct the issue, presumably because it also died for the same reason. The Precision M4600, the next newer model, has a numeric keypad, so I hate it. Same with other later Precision laptops. I'm a lot less critical about key-feel than I am about being centered on the screen. I often use my laptops as literal-laptops, and keeping my eyes and body centered seems useful to me in ways that numeric keypads on laptops cannot allow. I lust for a machine newer than my T530 that is also "serious" and that has a 15" display and that lacks a numeric keypad. : I grew up on an 88-key XT keyboard, wherein NumLock was still useful and it allowed me to choose between having arrow keys or having a numeric keypad. I thus learned to use top-row numbers because that allowed me to use both top-row numbers and arrow-keys at the same time, without actuating NumLock. I have not changed. (I do not wish to change. I do wish to keep my hands mostly-centered on the screen, though.)