-.\" $OpenBSD: ral.4,v 1.109 2016/06/16 17:25:32 martijn Exp $
+.\" $OpenBSD: ral.4,v 1.110 2016/08/17 11:52:29 stsp Exp $
.\"
.\" Copyright (c) 2005-2010 Damien Bergamini <damien.bergamini@free.fr>
.\"
.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
.\"
-.Dd $Mdocdate: June 16 2016 $
+.Dd $Mdocdate: August 17 2016 $
.Dt RAL 4
.Os
.Sh NAME
The
.Nm
driver supports PCI/PCIe/CardBus wireless adapters based on the Ralink RT2500,
-RT2501, RT2600, RT2700, RT2800 and RT3090 chipsets.
+RT2501, RT2600, RT2700, RT2800, RT3090 and RT3900E chipsets.
.Pp
The RT2500 chipset is the first generation of 802.11b/g adapters from Ralink.
It consists of two integrated chips, an RT2560 MAC/BBP and an RT2525 radio
The RT3090 chipset is the first generation of single-chip 802.11n adapters
from Ralink.
.Pp
+The RT3900E chipset is a single-chip 802.11n adapter from Ralink.
+The MAC/Baseband Processor can be an RT5390 or RT5392.
+The RT5390 chip operates in the 2GHz spectrum and supports one transmit path
+and one receiver path (1T1R).
+The RT5392 chip operates in the 2GHz spectrum and supports up to two transmit
+paths and two receiver paths (2T2R).
+.Pp
These are the modes the
.Nm
driver can operate in: