Lexmark being IBM’s former printer division is well known. Former employees purchased the keyboard business from Lexmark and made Unicomp.
Meanwhile, Hitachi Global Storage Technologies was IBM’s hard drive division and Lenovo was their PC division. IBM has sold off so many parts of itself over the years it is surprising there is much left.
Yep, I still have a couple or three Model M keyboards, and although all are IBM branded, if you disassemble them you'll find that, depending on the year, they were IBM or Lexmark manufactured.
Also, IBM laser printers from the 4019, 4029, 4039... series started to appear branded as Lexmark. At least if I remember correctly from when my father worked at a bank. Our equipment at home was a less fancy IBM Proprinter XL24. Noisy!
Meanwhile, Hitachi Global Storage Technologies was IBM’s hard drive division and Lenovo was their PC division. IBM has sold off so many parts of itself over the years it is surprising there is much left.