Logitech K780 Frequently Asked Questions

 Lag and disconnections on Bluetooth devices can be due to WiFi interference
 Resolve Bluetooth Wireless issues on Mac OS X
 Resolve Bluetooth Wireless issues on Windows 10
 +Install and use the SecureDFU firmware update
Some K780, K375s, and K850 keyboards may experience the following:
 When your keyboard is in sleep mode, it takes more than one keypress to wake it
 The keyboard enters sleep mode too quickly
If you are experiencing this problem, please download the Logitech Firmware Updating Tool
(SecureDFU) from your product's Download page and follow the onscreen instructions.
NOTE: You’ll need a Unifying receiver to perform the update.
Install and use the SecureDFU tool
1. Download and open SecureDFU_x.x.xx and select Run. The following window appears:
NOTE: During the firmware update process, Unifying devices will be unresponsive.
2. Click CONTINUE until you reach the window shown:

Logitech K780 Specifications

General

Purpose	Universal
Hot keys	Yes
Key pitch	19 mm
Noise level	45 dB
Certification	CE, FCC, CB
Frequency band	2.4 GHz
Keyboard layout	QWERTZ
Pointing device	No
Device interface	RF Wireless + Bluetooth
Keyboard language	Swiss
Number of hot keys	9
Key travel distance	2.2 mm
Keyboard key switch	-
Keyboard form factor	Full-size (100%)
Connectivity technology	Wireless
Keyboard number of keys	107
Keyboard keys technology	Scissor
Keyboard keys operating life	10 million characters
Battery capacity	1000 mAh
Power source type	Battery
Battery technology	Alkaline
Keyboard battery type	AAA
Service life of battery	24 month(s)
Number of batteries supported	4
Number of batteries (keyboard)	2
Mac operating systems supported	Mac OS X 10.14 Mojave, Mac OS X 10.15 Catalina, Mac OS X 10.15.3 Catalina, Mac OS X 11.0 Big Sur, Mac OS X 12.0 Monterey
Other operating systems supported	ChromeOS
Mobile operating systems supported	iPadOS, iOS 11.0, iOS 11.4, iOS 12, iOS 13, iOS 14.5, Android 7.0, Android 7.1, Android 7.1.2, Android 8.0, Android 9.0, Android 10.0, Android 10
Windows operating systems supported	Windows 10, Windows 11
Wireless range	10 m
Material	Metal, Plastic, Rubber
Product color	Grey, White
Keyboard style	Straight
Mean time to failure (MTTF)	150000 h
Package type	Box
Package depth	400 mm
Package width	169 mm
Package height	33 mm
Package volume	2231 cm³
Package weight	1084 g
Wireless receiver interface	USB Type-A
Quantity per pallet	528 pc(s)
Master (outer) case width	274 mm
Master (outer) case height	185 mm
Master (outer) case length	410 mm
Master (outer) case volume	20800 cm³
Master (outer) case weight	9200 g
Harmonized System (HS) code	84716060
Master (outer) case GTIN (EAN/UPC)	50992060649617
Quantity per intermodal container (20ft)	10752 pc(s)
Quantity per intermodal container (40ft)	22272 pc(s)
Quantity per intermodal container (40ft, HC)	25984 pc(s)
Storage temperature (T-T)	-40 - 60 °C
Operating temperature (T-T)	0 - 40 °C
Channels quantity	3 channels

Weight and Dimensions

Keyboard weight	875 g
Keyboard dimensions (WxDxH)	380 x 22 x 158 mm