That is correct, the 12mm thick Zenbook UX305 from ASUS does not have a LAN port, it is wireless or nothing for this ultrabook.  It does have three USB 3.0 ports, a micro HDMI, a 3.5mm jack for audio and an SD card reader so you will be able to use some wired peripherals with this ultramobile device.  At a mere 1.2 kg the machine is very light and with a M-5Y10 which can clock between 800MHz up to 2GHz with Turbo Boost it will run when you need it and be gentle on your battery when you do not.  KitGuru has posted a review of the UX305 here.

"The ZenBook UX305 is the latest Ultrabook offering from Asus. When I last reviewed one of their products – the hybrid T300 Chi – it greatly impressed me. The UX305 is a similar device, with a Core M processor, 8GB RAM and another SanDisk M.2 SSD. This time, however, it is a conventional laptop, and is priced at £649.95."

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