Amazon.com: 6FT Cable for Logitech Harmony Remote Compatible with 600, 650, 700, Ultimate, Ultimate One, Touch & Elite for Data Transfer USB Programming sync : Electronics
H37f Protective Silicone Cover Shockproof Sleeve Anti-lost Sleeve Compatible With Logitech Harmony 350 Remote Controller - Remote Control - AliExpress
How to Control Your Entire Home Theater with a Logitech Harmony Remote
Logitech HARMONY 350 Harmony One-touch control Remote
User manual Logitech Harmony 350 (English - 52 pages)