Maximum Lengths. According to USB.org, USB operating specifications limit the maximum length of the cable to 5 meters for full speed devices and 3 meters for any low speed devices. 5 meters is around 16 feet 5 inches, and 3 meters is around 9 feet 10 inches.
A National Kidney Foundation answered. Kidney damage from lupus can be mild or severe. It can cause damage to the filtering units (glomeruli) of the kidney. Since these filtering units clear your blood of waste, damage to them can cause your kidneys to work poorly or not at all.
Selective inhibitors (Celebrex) do not affect platelets. If you already have blood pressure or kidney problems, NSAIDs may worsen kidney function. Fluid retention or further elevation in blood pressure may occur. Reduced kidney function can occur with either Cox-1 or Cox-2 inhibitors. If you have lupus nephritis, you and your doctor should closely supervise your use of NSAIDs to reduce the potential for further harm to your kidneys. Occasionally lupus patients may experience elevations in their liver enzyme blood tests, suggesting a mild liver inflammation (hepatitis). Usually this does not mean that the medication must be stopped, but liver tests should be performed on a regular basis. Worsening of symptoms in people with asthma or inflammatory bowel disease.