diff --git a/package-lock.json b/package-lock.json
index 7fe13dae..86058638 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "scanservjs",
-  "version": "2.15.3",
+  "version": "2.16.0",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "scanservjs",
-      "version": "2.15.3",
+      "version": "2.16.0",
       "hasInstallScript": true,
       "license": "GPL-2.0"
     }
diff --git a/package.json b/package.json
index 1cee3c1a..cd114377 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "scanservjs",
-  "version": "2.15.3",
+  "version": "2.16.0",
   "description": "scanservjs is a simple web-based UI for SANE which allows you to share a scanner on a network without the need for drivers or complicated installation.",
   "scripts": {
     "clean": "rm -rf ./dist",
diff --git a/packages/client/package-lock.json b/packages/client/package-lock.json
index 6139af4e..f2b22c92 100644
--- a/packages/client/package-lock.json
+++ b/packages/client/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "scanservjs",
-  "version": "2.15.3",
+  "version": "2.16.0",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "scanservjs",
-      "version": "2.15.3",
+      "version": "2.16.0",
       "license": "GPL-2.0",
       "dependencies": {
         "@mdi/font": "^5.9.55",
diff --git a/packages/client/package.json b/packages/client/package.json
index c1025479..25fc07f1 100644
--- a/packages/client/package.json
+++ b/packages/client/package.json
@@ -1,6 +1,6 @@
 {
   "name": "scanservjs",
-  "version": "2.15.3",
+  "version": "2.16.0",
   "description": "scanservjs is a simple web-based UI for SANE which allows you to share a scanner on a network without the need for drivers or complicated installation.",
   "author": "Sam Strachan",
   "scripts": {
diff --git a/packages/client/src/classes/request.js b/packages/client/src/classes/request.js
index 94b0f2ee..ea8a83fa 100644
--- a/packages/client/src/classes/request.js
+++ b/packages/client/src/classes/request.js
@@ -20,8 +20,7 @@ export default class Request {
         left: request.params.left || device.features['-l'].default,
         width: request.params.width || device.features['-x'].default,
         height: request.params.height || device.features['-y'].default,
-        resolution: request.params.resolution || device.features['--resolution'].default,
-        mode: request.params.mode || device.features['--mode'].default
+        resolution: request.params.resolution || device.features['--resolution'].default
       },
       filters: request.filters || [],
       pipeline: request.pipeline || pipeline,
@@ -29,6 +28,9 @@ export default class Request {
       index: 1
     };
 
+    if ('--mode' in device.features) {
+      obj.params.mode = request.params.mode || device.features['--mode'].default;
+    }
     if ('--source' in device.features) {
       obj.params.source = request.params.source || device.features['--source'].default;
     }
diff --git a/packages/client/src/components/Scan.vue b/packages/client/src/components/Scan.vue
index b823a7e1..62f17831 100644
--- a/packages/client/src/components/Scan.vue
+++ b/packages/client/src/components/Scan.vue
@@ -16,7 +16,7 @@
           :label="$t('scan.resolution')" v-model="request.params.resolution"
           :items="device.features['--resolution']['options']"></v-select>
 
-        <v-select
+        <v-select v-if="'--mode' in device.features"
           :label="$t('scan.mode')" v-model="request.params.mode"
           :items="modes" item-value="value" item-text="text"></v-select>
 
diff --git a/packages/server/package-lock.json b/packages/server/package-lock.json
index 4121e0c3..9a2e1c0b 100644
--- a/packages/server/package-lock.json
+++ b/packages/server/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "scanservjs-server",
-  "version": "2.15.3",
+  "version": "2.16.0",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "scanservjs-server",
-      "version": "2.15.3",
+      "version": "2.16.0",
       "license": "GPL-2.0",
       "dependencies": {
         "adm-zip": "^0.5.5",
diff --git a/packages/server/package.json b/packages/server/package.json
index 6e60fe2e..22c6c8dc 100644
--- a/packages/server/package.json
+++ b/packages/server/package.json
@@ -1,6 +1,6 @@
 {
   "name": "scanservjs-server",
-  "version": "2.15.3",
+  "version": "2.16.0",
   "description": "scanservjs is a simple web-based UI for SANE which allows you to share a scanner on a network without the need for drivers or complicated installation.",
   "scripts": {
     "lint": "gulp lint",
diff --git a/packages/server/src/config.js b/packages/server/src/config.js
index 1a9ec6c0..ad8407fd 100644
--- a/packages/server/src/config.js
+++ b/packages/server/src/config.js
@@ -15,6 +15,7 @@ class Config {
     Object.assign(this, {
       version: Package.version,
       port: 8080,
+      timeout: 120000,
       devices: [],
       ocrLanguage: 'eng',
       log: {
diff --git a/packages/server/src/device.js b/packages/server/src/device.js
index b7b18718..d8061eaa 100644
--- a/packages/server/src/device.js
+++ b/packages/server/src/device.js
@@ -156,7 +156,7 @@ class Device {
   }
 
   validate() {
-    const mandatory = ['--mode', '--resolution', '-l', '-t', '-x', '-y'];
+    const mandatory = ['--resolution', '-l', '-t', '-x', '-y'];
     for (const feature of mandatory) {
       if (this.features[feature] === undefined) {
         throw `${feature} is missing from device`;
diff --git a/packages/server/src/request.js b/packages/server/src/request.js
index ee8ef6a1..52c103bc 100644
--- a/packages/server/src/request.js
+++ b/packages/server/src/request.js
@@ -31,7 +31,6 @@ class Request {
         width: bound(data.params.width, features['-x'].limits[0], features['-x'].limits[1], features['-x'].limits[1]),
         height: bound(data.params.height, features['-y'].limits[0], features['-y'].limits[1], features['-y'].limits[1]),
         resolution: data.params.resolution || features['--resolution'].default,
-        mode: data.params.mode || features['--mode'].default,
         format: 'tiff'
       },
       filters: data.filters || [],
@@ -40,6 +39,9 @@ class Request {
       index: data.index || 1
     });
 
+    if ('--mode' in features) {
+      this.params.mode = data.params.mode || features['--mode'].default;
+    }
     if ('--source' in features) {
       this.params.source = data.params.source || features['--source'].default;
     }
diff --git a/packages/server/src/scanimage.js b/packages/server/src/scanimage.js
index 141dfb9e..994b1659 100644
--- a/packages/server/src/scanimage.js
+++ b/packages/server/src/scanimage.js
@@ -42,8 +42,11 @@ class Scanimage {
     log.debug(JSON.stringify(request));
     const params = request.params;
     const cmdBuilder = new CmdBuilder(Config.scanimage);
-    cmdBuilder.arg('-d', params.deviceId)
-      .arg('--mode', params.mode);
+    cmdBuilder.arg('-d', params.deviceId);
+
+    if ('mode' in params) {
+      cmdBuilder.arg('--mode', params.mode);
+    }
 
     // Source needs to go before resolution
     if ('source' in params) {
diff --git a/packages/server/src/server.js b/packages/server/src/server.js
index b34d8c12..5d23a696 100644
--- a/packages/server/src/server.js
+++ b/packages/server/src/server.js
@@ -10,6 +10,8 @@ app.use(express.static('client'));
 
 configure(app);
 
-app.listen(Config.port, () => {
+const server = app.listen(Config.port, () => {
   log.info('Started');
 });
+
+server.setTimeout(Config.timeout);
diff --git a/packages/server/src/types.js b/packages/server/src/types.js
index 31a16478..5bd1ca56 100644
--- a/packages/server/src/types.js
+++ b/packages/server/src/types.js
@@ -57,6 +57,7 @@
  * @typedef {Object} Configuration
  * @property {string} version
  * @property {number} port
+ * @property {number} timeout
  * @property {string[]} devices
  * @property {boolean} devicesFind
  * @property {string} ocrLanguage
@@ -84,7 +85,7 @@
  * @property {number} width
  * @property {number} height
  * @property {number} resolution
- * @property {string} mode
+ * @property {string} [mode]
  * @property {string} format
  * @property {string} [source]
  * @property {number} [brightness]
diff --git a/packages/server/test/device.test.js b/packages/server/test/device.test.js
index 1162ae64..d96554e8 100644
--- a/packages/server/test/device.test.js
+++ b/packages/server/test/device.test.js
@@ -158,4 +158,25 @@ describe('Device', () => {
     assert.strictEqual(device.features['--brightness'], undefined);
     assert.strictEqual(device.features['--contrast'], undefined);
   });
+
+  it('scanimage-a8.txt', () => {
+    const file = FileInfo.create('test/resource/scanimage-a8.txt');
+    const device = Device.from(file.toText());
+
+    assert.strictEqual(device.id, 'umax1220u:libusb:001:004');
+    assert.deepStrictEqual(device.features['--resolution'].options, [75, 150, 300, 600]);
+    assert.strictEqual(device.features['--resolution'].default, 75);
+    assert.strictEqual(device.features['-l'].limits[0], 0);
+    assert.strictEqual(device.features['-l'].limits[1], 228.6);
+    assert.strictEqual(device.features['-l'].default, 0);
+    assert.strictEqual(device.features['-t'].limits[0], 0);
+    assert.strictEqual(device.features['-t'].limits[1], 298);
+    assert.strictEqual(device.features['-t'].default, 0);
+    assert.strictEqual(device.features['-x'].limits[0], 0);
+    assert.strictEqual(device.features['-x'].limits[1], 228.6);
+    assert.strictEqual(device.features['-x'].default, 228.6);
+    assert.strictEqual(device.features['-y'].limits[0], 0);
+    assert.strictEqual(device.features['-y'].limits[1], 298);
+    assert.strictEqual(device.features['-y'].default, 298);
+  });
 });
\ No newline at end of file
diff --git a/packages/server/test/request.test.js b/packages/server/test/request.test.js
index 33da5d79..e1d3e9af 100644
--- a/packages/server/test/request.test.js
+++ b/packages/server/test/request.test.js
@@ -69,4 +69,37 @@ describe('Request', () => {
     assert.strictEqual(request.params.contrast, undefined);
     assert.strictEqual(request.params.dynamicLineart, undefined);
   });
+
+  it('scanimage-a8.txt', () => {
+    const file = FileInfo.create('test/resource/scanimage-a8.txt');
+    const device = Device.from(file.toText());
+    const context = new Context([device]);
+    const request = new Request(context).extend({
+      params: {
+        deviceId: 'umax1220u:libusb:001:004',
+        top: -1,
+        left: -20,
+        width: 400,
+        height: 400,
+        resolution: '150',
+        mode: 'Color',
+        brightness: 0,
+        contrast: 0,
+        dynamicLineart: true
+      },
+      pipeline: 'test-pipeline'
+    });
+    
+    assert.strictEqual(request.params.deviceId, 'umax1220u:libusb:001:004');
+    assert.strictEqual(request.params.mode, undefined);
+    assert.strictEqual(request.params.resolution, '150');
+    assert.strictEqual(request.params.left, 0);
+    assert.strictEqual(request.params.top, 0);
+    assert.strictEqual(request.params.width, 228.6);
+    assert.strictEqual(request.params.height, 298);
+    assert.strictEqual(request.params.brightness, undefined);
+    assert.strictEqual(request.params.contrast, undefined);
+    assert.strictEqual(request.params.dynamicLineart, undefined);
+  });
+
 });
\ No newline at end of file
diff --git a/packages/server/test/resource/scanimage-a8.txt b/packages/server/test/resource/scanimage-a8.txt
new file mode 100644
index 00000000..f2d94741
--- /dev/null
+++ b/packages/server/test/resource/scanimage-a8.txt
@@ -0,0 +1,13 @@
+All options specific to device `umax1220u:libusb:001:004':
+    --resolution auto||75|150|300|600dpi [75]
+        Sets the resolution of the scanned image.
+    --gray[=(yes|no)] [no]
+        Do a grayscale rather than color scan
+    -l 0..228.6mm [0]
+        Top-left x position of scan area.
+    -t 0..298.027mm [0]
+        Top-left y position of scan area.
+    -x 0..228.6mm [228.6]
+        Width of scan-area.
+    -y 0..298.027mm [298.027]
+        Height of scan-area.
\ No newline at end of file