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diff --git a/lib/libusb/Makefile b/lib/libusb/Makefile
--- a/lib/libusb/Makefile
+++ b/lib/libusb/Makefile
@@ -11,7 +11,7 @@
SRCS+= libusb20_ugen20.c
INCS+= libusb20.h
INCS+= libusb20_desc.h
-MAN= libusb.3 libusb20.3
+MAN= libusb.3 libusb20.3 libusb20_dev_open.3 libusb20_be_device_foreach.3
MKLINT= no
NOGCCERROR=
PTHREAD_LIBS?= -lpthread
@@ -229,7 +229,6 @@
MLINKS += libusb20.3 libusb20_dev_get_debug.3
MLINKS += libusb20.3 libusb20_dev_get_fd.3
MLINKS += libusb20.3 libusb20_dev_kernel_driver_active.3
-MLINKS += libusb20.3 libusb20_dev_open.3
MLINKS += libusb20.3 libusb20_dev_process.3
MLINKS += libusb20.3 libusb20_dev_request_sync.3
MLINKS += libusb20.3 libusb20_dev_req_string_sync.3
@@ -261,7 +260,6 @@
MLINKS += libusb20.3 libusb20_be_add_dev_quirk.3
MLINKS += libusb20.3 libusb20_be_remove_dev_quirk.3
MLINKS += libusb20.3 libusb20_be_alloc_default.3
-MLINKS += libusb20.3 libusb20_be_device_foreach.3
MLINKS += libusb20.3 libusb20_be_dequeue_device.3
MLINKS += libusb20.3 libusb20_be_enqueue_device.3
MLINKS += libusb20.3 libusb20_be_free.3
diff --git a/lib/libusb/libusb20_be_device_foreach.3 b/lib/libusb/libusb20_be_device_foreach.3
new file mode 100644
--- /dev/null
+++ b/lib/libusb/libusb20_be_device_foreach.3
@@ -0,0 +1,56 @@
+.\"
+.\" Copyright (c) 2025 Rick Parrish <unitrunker@unitrunker.net>
+.\"
+.\" SPDX-License-Identifier: BSD-2-Clause
+.\"
+.Dd December 14, 2025
+.Dt LIBUSB20 3
+.Os
+.Sh NAME
+.Nm libusb20_be_device_foreach
+.Nd iterate connected USB devices
+.Sh SYNOPSIS
+.Lb libusb
+.In libusb20.h
+.Ft struct libusb20_device *
+.Fn libusb20_be_device_foreach "struct libusb20_backend *pbe" "struct libusb20_device *pdev"
+.Sh DESCRIPTION
+The
+.Nm
+call iterates connected USB devices, one device at a time.
+A backend pointer for
+.Va pbe
+may be obtained by calling
+.Xr libusb20_be_alloc_default 3 .
+The starting value of
+.Va pdev
+is NULL.
+Calling
+.Xr libusb20_be_device_foreach 3
+again with
+.Va pdev
+set to the return value of the previous call yields the next device.
+To begin interacting with a USB device, pass the pointer in a call to
+.Xr libusb20_dev_open 3 .
+.Sh RETURN VALUES
+.Nm
+returns NULL for end of list.
+Otherwise this is a pointer to the next device.
+.Sh EXAMPLE
+.Bd -literal
+ #include <libusb20.h>
+ struct libusb20_backend *be = libusb20_be_alloc_default();
+ struct libusb20_device *device = NULL;
+ while ( (device = libusb20_be_device_foreach(be, device)) != NULL ) {
+ if (libusb20_dev_open(device, 0) == LIBUSB20_SUCCESS) {
+ /* do something */
+ libusb20_dev_close(device);
+ }
+ }
+ libusb20_be_free(be);
+.Ed
+.Sh SEE ALSO
+.Xr libusb20_be_alloc_default 3
+.Xr libusb20_be_device_foreach 3
+.Xr libusb20_be_free 3
+.Xr libusb20_dev_open 3
diff --git a/lib/libusb/libusb20_dev_open.3 b/lib/libusb/libusb20_dev_open.3
new file mode 100644
--- /dev/null
+++ b/lib/libusb/libusb20_dev_open.3
@@ -0,0 +1,65 @@
+.\"
+.\" Copyright (c) 2025 Rick Parrish <unitrunker@unitrunker.net>
+.\"
+.\" SPDX-License-Identifier: BSD-2-Clause
+.\"
+.Dd December 14, 2025
+.Dt LIBUSB20 3
+.Os
+.Sh NAME
+.Nm libusb20_dev_open
+.Nd open a USB device to retrieve descriptors and initiate transfers
+.Sh SYNOPSIS
+.Lb libusb
+.In libusb20.h
+.Ft int
+.Fn libusb20_dev_open "struct libusb20_device *pdev" "uin16_t transfer_max"
+.Sh DESCRIPTION
+The
+.Nm
+call opens a USB device to retrieve descriptors and initiate transfers.
+.Nm
+accepts a pointer to a
+.Xr libusb20_device 3
+obtained from
+.Xr libusb20_be_device_foreach 3 .
+A zero for transfer_max limits the device to only control transfers.
+Call
+.Xr libusb20_dev_close 3
+to free resources taken by the open device handle.
+.Sh ERRORS
+.Nm
+returns one of the following to report success or failure:
+.Bl -tag -width "LIBUSB20_ERROR_NO_MEM" -compact
+.It Er LIBUSB20_SUCCESS
+The operation succeeds.
+.It Er LIBUSB20_ERROR_BUSY
+The device in use elsewhere.
+.It Er LIBUSB20_ERROR_ACCESS
+A permissions issue.
+.It Er LIBUSB20_ERROR_NO_DEVICE
+The device detached.
+.It Er LIBUSB20_ERROR_NO_MEM
+This library could not allocate memory.
+.It More errors in
+.Xr libusb20 3
+and
+.In libusb20.h
+.El
+.Sh EXAMPLES
+.Bd -literal
+ #include <libusb20.h>
+ struct libusb20_backend *be = libusb20_be_alloc_default();
+ struct libusb20_device *device = NULL;
+ while ( (device = libusb20_be_device_foreach(be, device)) != NULL ) {
+ if (libusb20_dev_open(device, 0) == LIBUSB20_SUCCESS) {
+ /* do something */
+ libusb20_dev_close(device);
+ }
+ }
+ libusb20_be_free(be);
+.Ed
+.Sh SEE ALSO
+.Xr libusb20_be_device_foreach 3 ,
+.Xr libusb20_dev_close 3 ,
+.Xr libusb20 3

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