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Besides a host of useful connectors, including a LAN port, mini-HDMI and mini-DisplayPort, the Helix also comes with 3G/LTE capability (LTE option available only in the US) and NFC support.
The usual downside of tablets powered by Intel's Core-i processors inside is that they tend to be rather hefty--the Microsoft Surface Pro (903g) is a good example. If you have previously used the iPad, or even a 10.1-inch Android slate, the ThinkPad Helix will feel heavy at 835g. It may also feel unwieldy due to its 11.6-inch form factor, while at 11.6mm thick, it's hardly what you'd call slim.
It gets worse once you add the dock with battery like dell Latitude D510 battery , dell Latitude D520 battery , dell Latitude D600 battery , dell Latitude D610 battery , dell 312-0068 battery , dell 6Y270 battery , dell 1X793 battery , dell C1295 battery , dell Inspiron 1100 battery , dell Inspiron 5100 battery , dell Vostro V130 battery , dell PRW6G battery , with the weight of the Helix increasing to 1.67kg with the accessory. That's not exactly light for a 11.6-inch device when you can find slimmer 13.3-inch Ultrabooks, such as the Acer Aspire S7. Of course, the Helix is a hybrid device that can be used in more ways than one--you aren't saddled with the keyboard like a laptop.
Some of the connectors on the Helix are located at the bottom edge of the tablet, which is subsequently obscured when connected to the dock. It's not a major issue, as the dock provides similar ports (USB and mini-DisplayPort). As the SIM card slot is also affected, it can be a minor inconvenience in those extremely-rare instances when you need to access it.
With a starting price of US$1,499, the ThinkPad Helix is pretty expensive, even for Ultrabook convertibles. However, its business slant means that companies, which can afford the premium price for the extra security and enterprise features, are most likely the ones to purchase the Helix.
Analysts don't seem too taken with Windows 8 convertibles, while consumers appear indifferent to Microsoft's latest operating system. However, when, (or if) the market does embrace these newfangled devices, Lenovo looks well positioned to take the lead with its extensive range of designs.
With the ThinkPad brand and its reputation for quality, the Helix could just convince enterprises to fork out the premium for a business-class convertible. The consumer market, however, appears a tougher sell at its price point.