The F1 key blinking issue can disrupt connectivity, causing the keyboard to revert from F2-3 keys back to F1, creating pairing problems.

The keyboard's pairing mode may persistently activate, indicated by a red LED, making it challenging to establish stable connections across multiple devices.

The K780's full-length trough is sturdy enough to support an iPad Pro, unlike the K585's narrower trough which struggles with larger devices.

K585's wider key spacing and tactile feedback are noted for comfortable lap use, though its keys may pop off during cleaning.

The K780's built-in stand is fixed at a single angle but is wide enough to accommodate larger tablets comfortably, enhancing usability for multitasking.

The K780 lacks a dedicated caps lock indicator, which some users find inconvenient, as it requires checking the screen to confirm the status.

Despite the lack of dedicated media keys, the keyboard's full-size layout includes a number pad, catering to productivity-focused users.

Physically moving the keyboard closer to the USB receiver can temporarily restore connection stability, especially in environments with obstacles like wooden desks.

The keyboard's Unifying feature does not support Bluetooth updates, complicating firmware management for users relying on Bluetooth connectivity.

The K780 is noted for its seamless compatibility with various operating systems like Windows, Mac, Android, and iOS, making it ideal for users with mixed-device ecosystems.

After a year of use, multiple owners report disconnection issues that sometimes resolve by changing batteries or repositioning the USB receiver.

Users find the K780's round keys require more precision when typing, which may affect speed and accuracy initially.

Owners appreciate the quiet operation of the keys, allowing for prolonged use without disturbing others in quieter environments.

Users report that the multi-device switching functionality can occasionally have a slight delay in reconnecting, though it generally performs reliably across devices.

K780 offers better build quality with less flex and more robust keys compared to the K585, which has plasticky keys and board flex, especially for heavy typers.

K780's heavier design is better for stabilizing large tablets, while the lighter K585 is preferred for compact desk setups.