Notes:
Please make sure your printer scanner has a Type B Female port, NOT a standard USB, Micro-USB or Mini-USB port.
This printer cable cannot work as a power cable to power on the printer.

Compatible Devices (Partial List):
HP DeskJet 2130 / 2132 / 2320 / 2540 / 2542 / 2544 / 2600 / 2620 / 2630 / 2700 / 2710 / 2720 / 3050 / 3520 / 3630 / 3633 / 3636 / 3720 / 3750 / 3762 / 3832 etc;
HP Envy4504 / 4520 / 4523 / 4524 / 4527 / 5000 / 5030 / 5530 / 5540 / 5544 / 5545 / 5546 / 6000 / 6010 / 7640 etc;
HP Photosmart 5520 / 5510 / 6520 etc;
HP OfficeJet 3830 / 3831 / 4500 / 4620 / 4650 / 4658 / 5230 / 5232 / 5740 / 6230 / 6500 / 6600 etc;
Epson ET-2800 / ET-2803 / ET-2850 / ET-4800 / ET-3843 / ET-3850 / ET-4850 / ET-5150 / ET-5170 / ET-5800 / ET-5850 / ET-5880 / ET-8500 / ET-8550 / ET-16600 / ET-M1170 / ET-M2170 / ET-M3170 XP-2100 / XP-3100 / XP-4100 / XP-4200 / XP-4105 / XP-5200 / XP-6100 / XP-6105 / XP-7100 / XP-8600 etc;
Epson Stylus SX130 / SX235w / SX400 / SX515w etc;
Epson WF-2850 / WF-2930 / WF-2950 / WF-2960 / WF-3820 / WF-3823 / WF-4820 / WF-4830 / WF-7310 / WF-7820 / WF-7840 / WF-2860DWF / WF-3820DWF / WF-4820DWF / WF-4830DTWF / WF-7830DTWF / WF-7840DTWF etc;
Canon Pixma MX495 / TS3150 / TS3350 / TS3450 / TS5050 / TS5350 / TS6250 / TS6350 / TS7400 / TS7450 / TS8350 / TS9550 / TR4550 / TR4650 / TR7550 / MG2520 / MG 2550S / MG2555 / MG 2950 / MG3550 / MG3650 / MG4250 / MG5220 / MG5150 / MG5350 / MG5500 / MG5550 / MG5650 / MG5750 etc;
Canon i-SENSYS LBP6030w / LBP6200d / MF8280Cw etc;
Samsung CLX-3305FN / CLX-3175FW / ML-1010 / ML-1200 / ML-1250 etc;
Lexmark X4650 / X5650 / CS317DN / CX510DE / MS317DN / MX310DN / CX310N / MS711DN etc;
Oki ML1120 / C5650DN / C301DN / MC362DN / MC563DN etc;
Brother MFC-J5330DW / MFC-J5730DW / MFC-L2710DW / MFC-L3750CDW / MFCL2730DWG1 / MFC-1910W / MFC-9330CDW / HL-1212W / HL-L3210CW / HL-L2310D / HL-L2300D / HL-L2370DN / HL-L8250CDN / DCP-L2520DW / HL-L2375DW / HL-L3230CDW / DCP-L3550CDW etc;
Other: Yamaha digital piano, sound bar, DAC etc.

Questions
1 Does it work with USB 3.0 ports too?
No, just for USB 2.0 port.
2 Is it compatible with all printer brands?
Just make sure your printer has a USB 2.0 Type B port.
3 Does its length cause any signal degradation?
No
4 Are its connectors gold-plated as described?
Yes
5 Is it compatible with MIDI devices/electric pianos?
Yes
6 Does it meet current USB 2.0 speed specs?
Yes