A:Answer The HP OfficeJet Pr 7740 is a wide-print all-in-one.
It prints, scans (USB or network), fax, and copy (black&white/color), if that is what you mean by 4-in-one.
I bought it to replace a five yr old all-in-one HP that was starting to put lines on the copies and scans when run through the ADF.
the 7740 prints up to 11 x 17 (which is why I bought it). It will scan 11 x 17 on the flat bed, but the ADF only does 8 1/2 wide so letter & legal for scans and copies using the ADF..