U310 was purchased on 29th June 2012 from Park Network Pvt Ltd, Sector 18, Noida, Uttar Pradesh, India.
Since the first time I have booted this system the WiFi speeds have been really low. On a 4Mps connection the wifi gives me a download speed of 200-500kbps whereas any other laptop on the same network gives me a speed of 3.5-4Mbps. But it works pretty fine on a wired connection.
Wireless throughput is slow. But when moving the system very close to the router, it will increase throughput to normal levels. As the system is moved farther away from the router, throughput levels will begin to drop. If the notebook is moved to a different room with a number of walls between the notebook and the router, throughput will drop to very low speeds.
Note: Several web sites provide download speed tests. Using your favorite search engine, search for “download speed test” then choose a test site from the results.
During July 2012, Lenovo received customer reports of lower than expected wireless performance on some U310 and U410 IdeaPad systems. As a result, we extensively tested sample U310 and U410 models and a design update was implemented to ensure a more consistent wireless performance in all customer environments.
U310 and U410 models manufactured after July 23, 2012 incorporate these updates and are not affected.
Customers with U310 and U410 models manufactured prior to July 23 who have experienced lower than expected wireless performance should contact Lenovo support to schedule service.
Note: If moving system close to wireless router does not improve performance, the issue is different and this fix is unlikely to have any impact.
This Notice pertains to a recent settlement agreement involving certain “U310” and “U410” notebook computers sold in the United States. Please read full details here.