Back when we reviewed the mid-range Transformer Pad TF300, many readers were upset to learn that they couldn't re-use their OG Transformer dock, meaning if they wanted to upgrade they'd have to buy a new tablet and a new keyboard, to boot.

ENGADGET: ASUS Transformer Pad Infinity TF700 review: meet the company's new top-of-the-line tablet

Clickfree's remarkably useful Transformer Cable isn't the only new gear being announced from the outfit today -- far from it, actually.

ENGADGET: Clickfree gone wild at CES: 1TB drive, Mac support and online backup

Fan of ASUS' affordable, yet competitively specced Eee Pad Transformer, but still haven't committed your credit to its 10.1-inches?

ENGADGET: ASUS' next gen Eee Pad Transformer to pack NVIDIA's quad-core Kal-El, launch this October?

In addition, it will charge the Blackberry Playbook, T-Mobile G-Slate, Samsung Galaxy Tab, the ASUS Transformer and most handheld electronics.

ENGADGET: Voltaic Spark Tablet Case powers your pad with the Sun's rays

The Asus Transformer tablet also has speakers, though I found these weren't nearly as strong as those built into the PC Station.

WSJ: A PC and Tablet 'Brick' for the Price of One

The latest filing leaving us scratching our heads is for the ASUS P1801-T, a "tablet" which could be the final version of the Transformer AiO prototype we saw back at Computex.

ENGADGET: Mysterious ASUS P1801-T visits the FCC, might be the finished Transformer AiO (updated)