It is confirmed that the MicroSD on the tablet and the SD on the keyboard dock both support 32 GB cards, but it is possible both will support 64 GB cards as well. There isn't any reason to buy more than the base 16 GB unit when you can easily add nearly unlimited additional storage. This is where the Eee Pad Transformer tablet shows how much more than an iOS device it is.
I've tested the USB ports with a 32 GB thumb drive and a 1 TB portable USB hard drive, both of which mounted and could be browsed with no problem. In addition to the two USB ports, the keyboard dock has a full-size SD slot and a proprietary USB-charging port.
I know many users aren't willing to learn how to deal with a new keyboard, so that might be a deal breaker for some consumers.
I've learned to be pretty good using the cramped keyboard of the original Eee PC 701, so I'm sure my struggles with this layout will improve with practice. With the two (!) built-in USB ports, it is easy to disable the touchpad and use a USB mouse, which is what I am using now.
(I'm not sure why this isn't standard in all versions of Android OS.) The enable/disable trackpad key is also great. All Android users should appreciate a dedicated screen-shot button that doesn't require root-access. I'm still learning to use these keys effectively, but I can tell they're very well thought out and give access to the most frequently required Android features. From left to right are a Back key, a Wi-Fi key, Bluetooth, Trackpad enable/disable, brightness down, brightness up, brightness auto, screenshot, Web, (Android) settings, play buttons, sound buttons, and a lock key. However, the top row of the keyboard shines, with a row of custom keys suited toward delivering an optimized Android experience. I've also experienced and read other users complaining about accidental input from the included multi-touch trackpad, hindering input rather than assisting it. The layout of the right Shift key next to the cursor keys is a poor design, leading me to hit the up-arrow frequently when looking for Shift. My typing accuracy is taking a hit on the Eee Pad Transformer keyboard. The device has quality construction, but the keys seem muddy and require a very firm keystroke in order to register compared to other devices I use. My guess is that most of the hottest and in-demand apps will eventually make their way to Honeycomb tablets. More importantly, I haven't had any problems with any of my critical apps I can't live without. I haven't loaded all of my apps yet, but most of those that are most important to me work fine. There might be some design issues that make it less intuitive how to get to where you want to be in Honeycomb, but overall, it is actually a pretty impressive platform. Honeycomb is a much more robust OS than iOS or regular Android, and things aren't where you've come to expect them. As I get more familiar with the new OS, I'm beginning to feel comfortable navigating it. On day one with the Eee Pad Transformer, I felt lost and overwhelmed by Android 3.0 Honeycomb.
( See photos of the Eee Pad Transformer in this gallery.) Honeycomb
There is a little flex, but it still feels solid and of good build quality. The fit and finish is a little less solid than an iPad, but I think people are exaggerating how "cheap and flimsy" this tablet feels. Everything else is what you've probably already heard about the device, good and bad. The ports on the tablet include the proprietary USB charging port, a micro-SD slot, a mic/headset port, and a mini HDMI port. Rather than describe what the tablet has, I'll focus on what it doesn't have. In terms of specifications, the Eee Pad Transformer is more or less like all the other Honeycomb tablets on the market. The unit has a copper brown color scheme that is unlike many other devices on the market currently, but I bet we see a lot of devices adopting this look in the next few years. Likewise, the Eee Pad Transformer and the keyboard dock are visually stunning devices. It is slick and polished and certainly shows the influence that Apple has on ASUS. The packaging that the Eee Pad Transformer arrives in will seem familiar to anyone who has ever owned an Apple product. Where the Eee Pad Transformer fails, it fails badly enough that it might be a deal breaker for the pickiest of users. Where the device shines, it beats the tablet-format market leader the iPad to a pulp, delivering an empowered user experience that Apple tablet owners can only dream about. I've spent a week with the ASUS Eee Pad Transformer TF101 tablet, and like Android, the experience is a mixed bag.